CN209186872U - A kind of scar, ligamentum flavum choose knife - Google Patents

Abstract

The utility model discloses a kind of scars, ligamentum flavum chooses knife, belong to medical instruments field, including arc cutter head, knife handle, handle and the safety screen on the downside of the arc cutter head, the safety screen is fixedly connected with the knife handle, the two sides of one end that the handle is connect with the knife handle are provided with irradiation light, replaceable dry cell is provided in the handle, the dry cell is electrically connected with the irradiation light, the utility model is by curved blade come to the scar after separation, ligamentum flavum is cut off, it does not need to scar, ligamentum flavum carries out rigid tearing, and the scar that processing is remaining, it can be under the action of safety screen when ligamentum flavum, prevent point of a knife from missing injuring nerve, endorchis, to safer, visual light source can be increased by irradiation light, doctor is allowed to be able to maintain the good visual field, to improve the safety of operation Property, reduce the generation of fortuitous event.

Description

A kind of scar, ligamentum flavum choose knife

Technical field

The utility model relates to medical instruments field, in particular to a kind of scar, ligamentum flavum choose knife.

Background technique

Ligamentum flavum is one layer of fine and close yellow connective tissue, and proximal end arises from upper vertebral plate lower part depth face, distally terminates in bottom Vertebral plate top superficial surface, inside are combined together with interspinous ligament, and ligamentum flavum plays a role to column stability after backbone, together When protect the endorchis of lower section, in spinal surgery, during laminectomy for decompression or decompression by fenestration, vertebra need to be cut off Ligamentum flavum between plate, to the heavier case of spinal canal stenosis, ligamentum flavum and endorchis adhesion are easy to damage dura mater during excision, The method solved in the past is first nerve dissector to be taken gradually to nibble carefully by adherence Separation, then with laminectomy rongeur, due to vertebral plate Rongeur is suitable for stinging except harder sclerotin, and for tough and tensile ligamentum flavum, it is all often the ability by way of near tearing It can remove it, in this way, which damaging deep dura mater endorchis breakage often occurs, leakage of cerebrospinal increases iatrogenic injury, remedies Measure also needs to repair, postoperative to cause low intracranial pressure headache, place the extension of drainage tube time, increase and infect probability etc., entire to increase trouble Person's hospital stays and expense, when backbone open surgery, the fibrosis around dura mater and nerve root at vertebrae plate resection, a large amount of scar Trace makes the musculus sacrospinalis of dura mater and nerve root and surrounding tissue, especially back side be sticked together, involve, pressuring nerve and cause tight The pain of weight needs to perform the operation in time at this time and reprocess, but because scar and nerve fiber adhesion are serious, it is neural, hard that there are scar tearings Membrane vesicle risk.

Utility model content

The purpose of the utility model is to overcome above-mentioned disadvantage existing in the prior art, a kind of scar, ligamentum flavum are provided The advantages of choosing knife, have and be easy to use, reducing endorchis and interspinous ligament damage possibility occurrence.

A kind of scar, ligamentum flavum choose knife, including arc cutter head, knife handle, handle and the peace on the downside of the arc cutter head Full baffle, the safety screen are fixedly connected with the knife handle, and the two sides of one end that the handle is connect with the knife handle are all provided with It is equipped with irradiation light, replaceable dry cell is provided in the handle, the dry cell is electrically connected with the irradiation light.

Preferably, being provided with the switch for controlling the irradiation light on the handle.

Preferably, the angle of the cutter head and the knife handle is 110 degree.

Preferably, the one end of the safety screen far from the knife handle is arc, and towards the direction of the arc cutter head Bending.

Preferably, the knife handle is flat.

Preferably, the length of the safety screen is greater than the length of the arc cutter head.

Preferably, the middle position of the safety screen offers recessing groove.

Preferably, the ratio between width of the width of the safety screen and the knife handle is 3:1.

Compared with prior art, the utility model has the beneficial effects that the utility model is by curved blade come to separation Scar, ligamentum flavum afterwards is cut off, and does not need to carry out rigid tearing to scar, ligamentum flavum, and handle remaining scar, Huang Ren It can prevent point of a knife from missing injuring nerve, dural sac under the action of safety screen when band, thus it is safer, pass through irradiation light Visual light source can be increased, doctor is allowed to be able to maintain the good visual field, to improve the safety of operation, reduce fortuitous event Generation.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram at the utility model arc cutter head；

Fig. 3 is the bottom view at the utility model arc cutter head.

Description of symbols:

1- arc cutter head, 2- knife handle, 3- handle, 4- safety screen, 5- irradiation light, 6- switch, 7- recessing groove.

Specific embodiment

With reference to the accompanying drawing, a specific embodiment of the utility model is described in detail, it is to be understood that this The protection scope of utility model is not limited by the specific implementation.

As shown in Figure 1 to Figure 3, a kind of scar provided by the embodiment of the utility model, ligamentum flavum choose knife, including arc cutter head 1, knife handle 2, handle 3 and the safety screen 4 on the downside of the arc cutter head, the safety screen 4 and the fixed company of the knife handle 2 It connects, the two sides of one end that the handle 3 is connect with the knife handle 2 are provided with irradiation light 5, and being provided in the handle 3 can be more The dry cell changed, the dry cell are electrically connected with the irradiation light 5, are provided on handle 3 for anti-skidding slot and lines.

Further, the switch 6 for controlling the irradiation light 5 is provided on the handle 3.

Further, the angle of the cutter head 1 and the knife handle 2 is 110 degree.

Further, the one end of the safety screen 4 far from the knife handle 2 is arc, and towards the arc cutter head 1 Direction bending.

Further, the knife handle 2 is flat, it is flat can than it is cylindric have better visual field effect, using rise To be more convenient.

Further, the length of the safety screen 4 is greater than the length of the arc cutter head 1, can effectively prevent arc Cutter head 1 hurts nerve or damage endorchis under scar, ligamentum flavum.

Further, the middle position of the safety screen 4 offers recessing groove 7, and recessing groove 7 can be convenient doctor's transmission Safety screen 4 observes the position of arc cutter head 1.

Further, the ratio between width of the width of the safety screen 4 and the knife handle 2 is 3:1, in the remaining scar of excision When trace, ligamentum flavum, the cutting quantity of arc cutter head 1 can be controlled, thus safer.

Working principle: first scar, ligamentum flavum and nerve and dura mater are separated using nerve dissector during surgery, need light When source, by the opening irradiation light of switch 6, the position for seeing arc cutter head 1 more removed by the reflection of safety screen, then Isolated scar, ligamentum flavum are cut using the present apparatus, again cut off remaining scar, ligamentum flavum when needing.

Disclosed above is only several specific embodiments of the utility model, and still, the utility model embodiment is not office It is limited to this, the changes that any person skilled in the art can think of should all fall into the protection scope of the utility model.

Claims (8)

1. a kind of scar, ligamentum flavum choose knife, which is characterized in that including arc cutter head, knife handle, handle and be located at the arc cutter head The safety screen of downside, the safety screen are fixedly connected with the knife handle, one end that the handle is connect with the knife handle Two sides are provided with irradiation light, and replaceable dry cell is provided in the handle, and the dry cell is electrically connected with the irradiation light It connects.

2. a kind of scar as described in claim 1, ligamentum flavum choose knife, which is characterized in that be provided on the handle for controlling Make the switch of the irradiation light.

3. a kind of scar as described in claim 1, ligamentum flavum choose knife, which is characterized in that the folder of the cutter head and the knife handle Angle is 110 degree.

4. a kind of scar as described in claim 1, ligamentum flavum choose knife, which is characterized in that the safety screen is far from the knife One end of handle is arc, and is bent towards the direction of the arc cutter head.

5. a kind of scar as described in claim 1, ligamentum flavum choose knife, which is characterized in that the knife handle is flat.

6. a kind of scar as claimed in claim 4, ligamentum flavum choose knife, which is characterized in that the length of the safety screen is greater than The length of the arc cutter head.

7. a kind of scar as claimed in claim 4, ligamentum flavum choose knife, which is characterized in that the middle position of the safety screen Offer recessing groove.

8. a kind of scar as described in claim 1, ligamentum flavum choose knife, which is characterized in that the width of the safety screen and institute Stating the ratio between width of knife handle is 3:1.